Mold.



0. s. HALL MOLD.

APPLICATION FILED APR. 28, 14915.

Patented Feb. 22,1916.

2 SHEETS-SHEET I 0. S. HALL.

MOLD.

APPLICATION FILED APR. 28, 19x5.

Patented Feb.22,1916.

2 SHEETS-SHEET 2 UNITEDSTATES P TENT orrion OWEN s. HALL, ornm) LODGE, MONTANA.

MOLD.

T alt whom it may concern Be it known that I, OWEN Lodge, in the county of Carbon, State of Montana, havefinvented certain new and useful Improvements in Molds; an'dl do herebydeclare the following to be a full,

clear, and exact description of the invention,

such as will enable'others skilledin. the art to which it appertainsto make and use the same.

This invention relates to molds and particularly to the type adapted for use in the ranged end to end in interlocking relation to form a continuous tubular member for use as a culvert.

A further object of the invention resides in the provision of a mold of the type named which can be easily set up and knocked down and which high grade of work.

\Vith the above and other objectsin view the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claim.

In describing the invention in detail reference will be had to the accompanying drawings wherein like characters of reference denotecorresponding parts. in the several views, and in whicl Figure 1 18 a side view of a mold constructed in accordance with the invention and adapted for use in forming the intermediate sections of a concrete culvert of the type set forth and claimed in my copending application filed April 1 1, 1914, Serial No. 831,769; Fig. 2, a plan view of what is shown in Fig. 1; Fig. 3, a vertical section of what is shown in Fig. 1; Fig. at, a transverse section of what is shown in Fig. 1; Fig. 5, a horizontal section of what is shown in Fig. 1; Fig. 6, a perspective view of one of the partitions of the mold; Fig. 7,

a perspective view of a fragment of the base of the mold, and Fig 8, a perspective view of a fragment of the collapsible core employed in the mold.

S. HALL, a citizen of the United States, residingat Red a mold of the type named rality will produce a Specification otLetters Patent. P t te e 22, 191 Application filed April 2.8,i915. sardine/24,462.

Referring to' the drawings the improved mold is shown as comprising a base'member 10 having ledges: 11 suitably secured flonqthe upper side thereof along its respec- "tive side,edges..1 These ledges 11 are pro- 'fvidedwith corresponding grooves 12 formed in their inner faces. These grooves are equally spaced from "each other and engaged .in, corresponding grooves are the i lower side edges of division plates A. Each of these division plates A. is provided with a corereceiving opening 13 and each plate further embodies ofis'etwlower and upper.

ends l t-and 15 and an intermediate connecting portion 16, said portion 16 being inclined' downwardly. Each of the division plates A is further provided with a. plubers 17.

The improved mold further comprises lower side memberslseachof which is provided with upper "and lower longitudinal flanges 19 and 20 respectively, the latter resting'upon the upper. edges of. the ledges 11, while the former are pr vide d at spaced points w th slots 21. Each .of the lowerv of laterally extending eye memv side members "18 is provided with openings through which are engaged respective eye members 17.11 wedge 23 is then en gaged through each eye member 17 and in this manner the lower side members 18 are 1 secured in place.

The mold further comprises upper side members 21each of which is provided with upper and lower flanges 25, the latter resting upon the upper flanges 19 of the lower side members 18.. Secured to each upper side member'ild is plurality of fingers 26 which project through, openings in the lower flanges and are .detachably engaged through respective slots 21 to interlock the upper and lower side members. Each of the upper side members 21 is further provided with openings-27 through which are engaged respectively certain of the eye members 17. Wedges 28 are passed through the eye members 17 which project through the openings 27 and in this way the upper side members 21 are detachably secured to the division plates A. It will be noted that the upper edges of the upper side members 24 are disposed in spaced relation'to provide a suitable opening for the introduction of cement or other plastic material into the mold. The mold further comprises a core element B of the collapsible type, said element when 1n place being engaged through the core receiving openings 13. This core i3 is formed of suitable sheet metal bentv into substantiallycylindrical form Withfits side edges disposed in spaced relation. Se.

cured to the inner side'of the core B adjacent eachside edge thereof is a longitudinal angle iron 29. Pivotallyvconnected to each angle iron 29 is a plurality of levers 30 the inner ends of which are pivotally connected to a common operating bar 31...

lihen the core B is collapsed corresponding levers 30 will be disposed at an angle to each other. If" it is desired to expand the core to its-limit the bar 31 is moved longitudinally until corresponding levers 30 are disposed in longitudinal alinement.

In the use of the mold the upper side members and the core are first removed and the material. is introduced between the division plates up to the lower edge of the openings 13. The core B is then placed through the openings 13 and spread by operating the bar .31 until it fits snug against the Walls of the openings 13. Additional -material is then introduced into the mold up to the top of the bottom side members 18. Elie upper side members 24; are then secured in place and the balanceot the ma terial introduced into the mold.

It will be noted that the top portion of the core 13 is somewhat thicker than the side portion sothat in collapsing the spring action will come in the sides of the core and keep the latter from pinching at the top and bottom when Withdrawn. In the, .present instance I reach this end by securinga supplemental plate C across. the top of the core and rivetingthe edges of this plate to the side portions of the core. reinforcing ribsD are'securedv to the inner side of the core, same being shown in this instance as angle irons.

While I have illustrated; and described one form of carrying .my invention into practice it will be obvious @that various ohangesin s1ze,pr0port1on, shape and iar- Suitable ran-gement can be resorted to Without departing from the scope of the invention as set forth in the appended claim. l i hat is claimed is r- In a mold of the class. described, the Com-,,

bination of a plurality of spaced division plates. having oli'set iupper and lower portions and a downwardly inclined intermadiate portion connecting said lower and upper. portions, said plates being further {pro-- Copies of this' patent may Jae obtained for five cents each, by addressing the Commissioner of Pat ents.-

' Washington, D. G. 

